/*
 *  Licensed to the Apache Software Foundation (ASF) under one or more
 *  contributor license agreements.  See the NOTICE file distributed with
 *  this work for additional information regarding copyright ownership.
 *  The ASF licenses this file to You under the Apache License, Version 2.0
 *  (the "License"); you may not use this file except in compliance with
 *  the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */

/**
 * @author Stepan M. Mishura
 */

package org.apache.harmony.security.asn1;

import java.io.IOException;
import java.util.Calendar;
import java.util.GregorianCalendar;
import java.util.TimeZone;

/**
 * Abstract class to represent ASN.1 time types
 * 
 * @see http://asn1.elibel.tm.fr/en/standards/index.htm
 */

public abstract class ASN1Time extends ASN1StringType {

	/**
	 * TODO Put ctor description here
	 * 
	 * @param tagNumber
	 */
	public ASN1Time(int tagNumber) {
		super(tagNumber);
	}

	@Override
	public Object getDecodedObject(BerInputStream in) throws IOException {

		// TODO optimize me:
		// It makes sense use calendar instance instead of times array
		final GregorianCalendar c = new GregorianCalendar(
				TimeZone.getTimeZone("GMT")); //$NON-NLS-1$

		c.set(Calendar.YEAR, in.times[0]);
		c.set(Calendar.MONTH, in.times[1] - 1);
		c.set(Calendar.DAY_OF_MONTH, in.times[2]);
		c.set(Calendar.HOUR_OF_DAY, in.times[3]);
		c.set(Calendar.MINUTE, in.times[4]);
		c.set(Calendar.SECOND, in.times[5]);
		c.set(Calendar.MILLISECOND, in.times[6]);

		return c.getTime();
	}
}
